Dr. James L. Studt, Medical Director

Dr. Studt joined RCTC in June of 1999 as Medical Director. He came to San Angelo from Holt-Krock Clinic in Fort Smith, Arkansas, where he practiced radiation oncology since 1988. He is a graduate of the University of Texas at Austin; University of Texas Southwestern Medical School at Dallas, and received his post-graduate training at the University of Utah Medial Center in Salt Lake City, Utah and the University of Texas Health Science Center in San Antonio. He is certified by the American Board of Radiology-Radiation Oncology.

Misty Sonnenberg, Administrator

Misty joined RCTC in February 2005. She graduated from Angelo State University in 2006 with a Bachelor of Business Administration Degree and became a Certified Tumor Registrar in September of 2007.

Ana Mihail, Medical Physicist

Ana joined RCTC in June of 2018 as our medical physicist and is certified by the American Board of Radiology in therapeutic radiologic physics. She has a master’s degree in nuclear physics from “Babes Bolyai” University in Cluj-Napoca, Romania. Ana’s extensive experience includes intensity-modulated radiation therapy (IMRT), HDR, LDR, CT simulation, and intravascular brachytherapy. She has also accepted and commissioned linear accelerators, treatment planning systems, CT Simulators, and HDR units.

Gina Munn, Chief Therapist

Gina joined RCTC in 1989 and is the Chief Therapist. She graduated from Midwestern State University in Wichita Falls with an Associate Degree in Radiologic Technology with honors and received the Mallinckrodt Award. She later attended the University of Texas, M.D. Anderson Cancer Center in Houston and completed their radiation therapy program, where she received the Outstanding Academic Achievement Award.

Roger Aguilar, Dosimetrist/Therapist

Roger joined RCTC in January of 2000. He graduated from Odessa College in 1993 with an Associate Degree in Applied Science in the field of Radiologic Technolgy and was awarded the Science Award for Clinical Excellence. He then attended the School of Radiation Therapy at M.D. Anderson in Houston where he received his education in radiation therapy.

Tracy Millner, Billing Coordinator/Receptionist

Tracy joined RCTC in 1989.  She is a graduate of San Angelo Lake View High School.

Virginia Esquivel, Insurance Billing

Virginia joined the staff of RCTC in August of 2010.

Amy Bateman, Radiation Therapist

Amy joined the staff of RCTC in November of 2007. She is from Columbia, Illinois and received her Associates Degree in Radiologic Technology from Southwest Illinois College. She went on to receive her Bachelor in Radiation Therapy from Southern Illinois University of Carbondale.

Hilton Blackwell, Radiation Therapist

Hilton joined the staff of RCTC in June of 2008. He is originally from Brownwood, Texas and received his Associates Degree in Applied Science in Radiation Therapy from Amarillo College. He also has a Bachelor in Kinesiology from Angelo State University.

Misty Caldwell, Radiation Therapist

Misty joined the staff of RCTC in October of 2011. Originally from Big Spring, she attended the School of Radiologic Technology at SMMC and received her certification in Radiography in 1991. She then attended the School of Radiation Therapy at Lubbock Methodist where she received her certification in Radiation Therapy in 1994.

Cary Johansen, Radiation Therapist

Cary joined the staff of RCTC in June of 2017. He graduated from Blinn College, receiving an Associate Degree in Radiologic Technology. He went on to earn an Associate Degree from Amarillo College and was awarded the Outstanding Major Award for his academic performance.

Summer Gill, Registered Nurse

Summer joined RCTC in April of 2019.  She graduated from Angelo State University as a Registered Nurse.

Eulanda Kent, Radiation Therapy Aide

Eulanda, a Certified Nurses Aide, joined RCTC in March of 2005. She assists the therapists in treating the patients, transports patients from the area hospitals, and helps with block construction as needed.